Automatic fire and burglar alarm telegraph.



PATBNTED MAY 3, 1904.

R. G. GALLUM.

AUTOMATIC FIRE AND BURGLAB. ALARM TELEGRAPH.

APPLICATION FILED MAE. II 1902.

4 SHEETS-SHEET 1.

N0 MODEL.

PATENTED MAY 3, 1904.

R. G. GALLUM.

AUTOMATIC FIRE AND BURGLAR ALARM TELEGRAPH.

APPLIOATION FILED MAR. 1, 1902 4 SHEBTSSHEET 2.

NO MODEL.

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v (inventor ,ffogerfaafi/m I 77/5 elf rbwm b wi lmmeo Noam puns covr-normjrmo, WASPIIAQYUN n r No. 758,736. PATENTED MAY 3, 1904. R. G,CALLUM.

AUTOMATIC FIRE AND BURGLAR ALARM TELEGRAPH.

APPLIOATION FILED MAR. 1. 1902.

N0 MODEL. 4 SHEETS-SHEET a.

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AUTOMATIC FIRE AND BURGLAR ALARM TELEGRAPH.

APPLICATION FILED MAB. 1. 1902.

N0 MODEL. 4 SHEETBSHEET 4.

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UNITED ST TES Patented May 3, 1904.

ROBERT G. OALLUM, OF \VASI'IING'ITON, DISTRICT OF COLUMBIA.

AUTOMATIC FIRE AND BURGLAR ALARM TELEGRAPH.

SPECIFICATION forming part of Letters Pa n NO- 758,736, dated 3, 1904.

Application filed March 1, 1902.

To all whom, it 7')I/fl/ 7/ concern..-

Be it known that 1, ROBERT G. GALLUM, a citizen of the United States,residing at \Vashington, District of Columbia, have invented certain newand useful Improvements in Automatic Fire and Burglar Alarm TIelegraphs;and I do declare the following to be a full, clear, and exactdescription of the invention, such as willenable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, and to the figures of reference markedthereon, which form a part of this specification.

This invention, which relates to automatic fire and burglar alarmtelegraph systems, contemplates the production of an etlicient anddurable instrument combining in a compact structure improved meansconnecting a local or house wire, floor-section wires, and a mainlinewire, all in normally closed metallic circuit with an annunciator, analarm-bell, and a battery-signal, whereby any disturbance occasioned byfire or unlawful tampering with the wires or by exhaustion of thebatteries is promptly made known to the occupants of the buildingaffected and to the central office in a manner to announce to allconcerned the exact locality and nature of such disturbance. Thefloor-sections are each connected by a metallic circuit with theinstrument, and as another feature of the invention there is provided,preferably in the house-circuit, a relay which is operated coincidentlywith the unlawful looping out or grounding .of any of the floor-sectioncircuits to sound a distinctive signal.

Other features of the invention, together with the advantages possessedthereby, are set forth in the following detailed description, inconnection with which attention is called to the accompanying drawings,illustrating the preferred form of instrument and parts cooperatingtherewith.

In the drawings, Figure 1 is a front elevation of an automatic fire andburglar alarm instrument embodying the invention. Fig. 2 is a frontelevation of the instrument with the cap or cover removed and showingthe connections. Fig. 3 is a rear elevation. Fig.

Serial No. 96,223. \No model.)

4: is a bottom view. Fig. 5 is a top view. Fig. 6 is a detail view inperspective showing the means for controlling the locating-signals. Fig.7 is an enlarged view in perspective of the means for producing a shortcircuit upon the breaking of any of the floor-section circuits. Fig. 8is a vertical sectional view on line 8 8 of Fig.

Referring to the drawings by numerals, 1 denotes the back plate, ofinsulating material, which supports the mechanisms, including a bell 2,preferably secured to an extension 3 of the back plate. A train ofgearing impelled by a coiled spring is mounted between frame-plates it5, and to the escapement 6 of the train is secured the arm 7 of abell-hammer 8. Secured also to the escapement is an arm 9, arranged tobe normally engaged to lock the train by a trip 10 on an armature 11. Apair of magnets 12 I2, fixed to the back plate, have their pole-pieces13 extended outwardly to normally attract the armature and lock thetrain, the armature being pivotally secured to a bracket let on one ofthe polepieces. The armature is arranged to fall by gravity to releasethe train when the magnets become deenergized, the limit of movementbeing fixed by a stop-screw 11.

On a central shaft 15, which preferably is driven directly by themainspring of the gearing, is mounted an arm 16, carrying a handle 17,by which the spring wound, and provided at its free end with a pointer18. Fixed to the shaft to the rear of the arm 16 is a plate 19, which inthe rotation of the shaft is brought successively into engagement with aconcentrieally-arranged series of contacts fixed to a curved support 20,of insulating material, the support being secured on the outerframe-plate Each of the contacts consists of two spring-arms 21 22,fixed at their inner ends in slots in the support and having theirnormally separated outer ends in the path of the plate 19, whereby thelatter in its movement operates by engagement to press the ends of thearms into contact with each other, and thus produce a short circuit inthe manner presently to be described.

By reference to Figs. 1 and 2 of the drawings it will be observed thatthe instrument tion and back to the screw 31.

is adjusted for use in a building having five floors, although obviouslythe number may be increased or diminished. The contacts for thefloor-signals are interposed between the initial or set position of thehandle-arm 16 and the position thereof which indicates the exhaustion ofthe battery. In adjusting the instrument for service the handle-arm isturned to the set position and is, together with the train of gearing,locked by the trip 10 on the armature, the latter being attracted by themagnets.

On the back plate are binding-screws, certain of which are connected bywires with the contacts on the support 20. The wire 23, which isconnected with the first screw 24, leads to the arm 21 of the first pairof contacts, and leading from the second screw 25 is a wire 26, whichconnects with the arm 22 of the first pair of contacts and also with thearm 21 of the second pair, the first arm 22 and the second arm 21 beinglapped at their.

inner ends, as shown more clearly in Fig. 7. ires 27, 28, and 29,respectively, lead from screws 30, 31, and 32 to the lapped arms 22 21of the other contacts. Awire 33 connects the binding-screw 24 to abinding-screw 34, to which is connected by a binding-post one end of thehouse or building circuit-wire 35. The other end of the housecircuit-wire is connected by a binding-post with a screw 36, which isconnected with one of the magnetwires 37 Binding-posts, which areconnected withthe binding-screws, are provided at the rear side of theback plate, and connected with the posts are the floor circuit-wires,which are shown in Fig. 2. The wire 39 of the firstfloor section leadsfrom the screw to the section and back to the screw 25. Thesecondfioor-section wire 40 leads from the screw 25 to the section andback to the screw 30. The third-section wire 41 leads through the sec-The fourthsection wire 42 leads through the section and thence to thescrew 32, and, finally, the fifthfioor-section wire 43 leads to thefinal springcontact 22. 38 is the other magnet-wire, which connects withthe wire 43.

In the house circuit-wire 35 is a battery 44 and also a double-balancedrelay 45, the function of which is to sound an alarm and announcedisturbance occasioned by unlawful looping out or grounding of any ofthe floorsection wires or by weakening of the battery. Distinctivesignals are provided in connection with the relay to announce whetherthe disturbance is due to an increased or diminished resistance in thecircuit-wires.

When a break occurs in any of the normally closed floor-circuits, themagnets become deenergized and the armature falling by gravity unlocksthe train of gearing, setting it in motion to revolve the handle-arm 16and plate 19. As the plate engages the contactarms 21 22 the outer endsof the arms. are

moved against spring action into contact with each other toshort-circuit the floor-section wire to which they are connected. Thisshort circuit results in the energizing of the magnet, whereby thearmature is attracted and moved to lock the train and the handlearm.Obviously if the break occurs in the upper floor-sections the plate 20will traverse the contacts in advance of the pair connected with thedisturbed section without closing the circuit; but when the contactsofthe affected section are engaged'by the plate and brought together thecircuit is established and the mechanism isstopped with the arm 16 atthe point which indicates the locality of the disturbance. The length ofthe plate 19 is such as to extend between all of the contacts, wherebythe engagement of the contacts is maintained throughout the entiremovement of the plate. It the battery becomes exhausted, the circuit isbroken and the arm moves to the position which indicates this characterof disturbance.

Referring to Figs. 1 and 4, a dial-plate 46 is shown mounted in aremovable cap or cover 47, the dial-plate having thereon in the path ofthe pointer 18 the floor-numbers, the set position of the arm, and theposition of the arm when the battery has become exhausted. Theinstrument is connected with a main-line wire leading to the centraloffice, in which line is located a tap-bell and recording instrument.The main-line wire 48 leads at one end to a binding-post connected witha binding-screw 49 on the back plate, and the other end of the wireleads to a binding-post connected with a binding-screw 50. A wire 51connects the screw 49 with a screw 52 on the frame-plate 4, and a wire53 connects the screw 50 with a spring-contact arm 54, fixed to a block55 on the support 20, the block being of insulating material. The arm 54is arranged between contact-arms 56 57, also fixed to the block 55 andhaving their outer ends bent in the direction ofthe middle arm 54.

On a shaft 58, which receives motion through the train of gearing, arefixed two make-andbreak wheels, one of which, 59, is notched in itsperiphery to send a building-signal, and the other, 60, is notched totransmit the floorsignal. Secured to a block 61 of insulating materialis a brush 62 in contact with the wheel 59 and also a brush 63 incontact with the wheel 60; The brush 62 is connected by a wire 64 withthe contact-arm 56, and a wire 65 connects the brush 63 with thecontact-arm 57. Normally the arms 54 and 56 are in contact, and acircuit is established with the main line to send when the mechanism isset in motion a building-signal by the wheel 59. The wheel 59 isprovided with duplicate notches, and the wheel is geared tocomplete arevolution while the arm 16 is moving to the first pair of contacts 2122, whereby two buildingsignals are sent to and recorded at the centraloffice. The building-signals are followed by a signal which locatestheflooi's of the building in which the disturbance is created, this beingaccomplished through the medium of the wheel in the following manner: Onthe shaft 15 is fixed a cam 66, which in the normal position of theparts is in the path of an insulated projection 67 on the middlecontactarm 54, whereby the latter is forced against spring action out ofcontact with the arm 57, which connects with the floor-signal wheel, andinto contact with the arm 56, which connects with the building-signalwheel. In the initial movement of the parts the contact of the arms 5456 is maintained by the cam a sufficient length of time to permit theduplicate building-signal to be sent in; but in the final movement thecam is carried out of the path of the projection 67, and the arm 54 isthereby retracted and disengaged from the arm 56 and brought intocontact with the arm 57 to send in, through the wheel 60, thefloorsignal.

In connection with the instrument I may employ thermal circuit-breakersto produce the break necessary to send a fire-signal, and thefloor-section wires and house-wires may be so arranged as to compel abreak in the circuit before unlawful entry can be effected. Coincidentwith the alarm given to the occupants of the affected building, whichalarm in eludes an indication of the location of trouble, the fact ofsuch disturbance and the exact 10- cality of the building are announcedto the cen tral oflice. The instrument, moreover, will indicate theweakening and exhaustion of the battery and will announce through therelay an attempt to render the instrument inoperative by looping out, bywhich is meant the unlawful attachment of a wire looped around afloor-circuit wire to cut out the circuit.

In practice in the event of a break in the circuit-wire 39 of floor 1,for instance, the magnets 12 12 become deenergized and the armature 11,falling by gravity, effects the release of the clockwork, with theresult of rotating the plate 19 until the latter is brought intoengagement with the first spring-contact 21. This engagement closes thebreak between said contact 21 and its companion contact 22, and throughwires 23, 35, and 3'7 and the wires 26, floor-section wires 40 to 43,inclusive, and wire 38 the circuit through the magnets is establishedand the armature is attracted and moved to check the clockwork, thepointer stopping at 1st floor. In the operation of the released worksthe circuit in wire 48 is broken by the separation of the contacts 54 56and the making of the circuit in which is located the make-and-breakwheels 59 60 by the engagements of the contacts 54 57.

I claim as my invention 1. In an instrument of the class described, thecombination of normally closed electric floor-section circuits, ahouse-circuit connected therewith, a magnet, a spring-actuated train ofgearing, an armature normally attracted by said magnet and provided withmeans normally locking the train of gearing, a circular series of pairsof spring-contacts each pair looped from a floor-section circuit, and arevoluble plate operatively connected with said train to be movedthereby when any one of the floor-section circuits is broken, said platebeing movable over the series of pairs of spring-contacts tosuccessively bring the pairs of contacts into maintained engagement toshort-circuit the floor-section circuits.

2. In an instrument of the class described, the combination of normallyclosed electric floor-section circuits, a house-circuit including adouble-balanced relay, a normally open circuit looped in thefloor-section circuits, an annunciator, a device for successivelyclosing said loops, and maintaining them in closed condition, and meansfor actuating the annunciator and device adapted to be set in motion bythe breaking of one of the floor-section circuits.

3. In an instrument of the class described, the combination of anormally closed electric floor-section circuit, a normally open circuitlooped therein, a train of gearing, a device movable by the train whenthe floor-section circuit is broken to close the loop and maintain aclosed circuit, a main-line circuit, and building and floor signalmaking wheels in the main-line circuit said wheels being successivelycontrolled by the movement of the device.

4. In an instrument of the class described, the combination of a localnormally closed electric circuit, means operating through a train ofgearing when the circuit is broken for producing and maintaining a shortcircuit, a main-line circuit, and building and floor signal makingwheels in the main-line circuit the wheels being successively controlledby the movement of said means.

In testimony whereof I affix my signature in presence of two witnesses.

ROBERT Gr. CALLUM.

WVitnesses:

J. WV. TAYLOR, M. G. ANDERSON.

